Computer Accessory Sets features: UKB-5400-RF 2.4GHz Mini Wireless Keyboard Mouse Combo with Touchpad & USB Receiver, English Keyboard / Russian Keyboard(Black) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. 1) 2.4GHz wireless receiver integrated design 2) The mouse wheel feature innovative 3) When you press the FN button with your fingers, touch anywhere in the sliding region, can facilitate the realization of the mouse wheel functions, this human design, it can be easier for to browse the web better, edit documents. 4) Handheld design is easy to carry and operate 5) Innovative design of the Navigation keys 6) Windows Multimedia Control 7) With a real notebook Touchpad 8) Real QWERT full-function mini keyboard 9) To enjoy PC multi-media entertainment at home 10) Convenient & efficient for conference, presentation & lecturing 11) Large PAD for handwrite 12) Support: HTPC, Business lecture system, video conference system, PC with windows OS,Mac,Linux,PS3,XBOX360 13) Perfect control PC, smart phone entertainment features 14) You can use it for emails, chat,or to enjoy your favorite games, it is compatible with desktop computers running windows or Linux, but also with handhelds running Android, windows mobile pocket PCs, etc. it also supports the Sony PS3,use it with your HTPC on your sofa or browse the internet in the most comfortable fashion. ** Specification 1) Frequency range: 2.403GHZ ~ 2.480GHZ 2) Operational voltage: 3.3V 3) Operational range: up to 10m 4) Transmit power: +5db Max. 5) Operation current: